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•••••MOSLSI65,536 X 4 OrganizationSingle + 5·V Supply (10% Tolerance)22·Pin Single-In-Line Package (SIP)Utilizes Four 64K Dynamic RAMs in PlasticChip CarrierLong Refresh Period ... 4 ms (256 cycles)All Inputs, Outputs, Clocks Fully TTLCompatible3-State OutputsPerformance of Unmounted RAMs:ACCESS ACCESS READTIME TIME ORROW COLUMN WRITEADDRESS ADDRESS CYCLE(MAX) (MAX) (MIN)TMS4164-12 120 ns 75 ns 230 nsTMS4164-15 150 ns 100 ns 260 nsTMS4164-20 200 ns 135 ns 330 nsCommon CAS Control with Separate Data-Inand Data-Out LinesLow Power Dissipation:OPERATING STANDBY(TYP)(TYP)TM4164EC4-12 800 mW 70mWTM4164EC4-15 700 mW 70 mWTM4164EC4-20 540 mW 70 mW• Operating Free-Air Temperature ... 0 DC to70 D C• Upward Compatible with 256K X 4. Single­In-Line PackagedescriptionTM4164EC465,536 BY 4·B11 DYNAMIC RAM MODULEREAD,MODIFY,WRITECYCLE(MIN)260 ns285 ns345 nsAO-A7CAS01-04NC01-04RASVooVSSW22·PINSINGLE·IN·L1NE PACKAGE(TOP VIEW)NC(1)VDD (2)D1 (3)01 (4)CAS (5)A7 (6)A5 (7)A4 (8)D2 (9)02 (10)W(11)A1 (12)A3 (13)A6 (14)03 (15)D3 (16)A2 (17)AO(18)RAS (19)D4 (20)04 (21)VSS (22)PIN NOMENCLATUREAddress InputsColumn Address StrobeData InputsNo ConnectionData OutputsRow Address Strobe+ 5-V SupplyGroundWrite EnableNOVEMBER 1983rnQ):;"Co::?i::?iCThe TM4164EC4 is a 256K, dynamic random-access memory module organized as 65,536 x 4 bits in a 22-pin singlein-linepackage comprising four TMS4164FPL, 65,536 x 1 bit dynamic RAM's in 18-lead plastic chip carriers mountedon top of a substrate together with two 0.2JLF decoupling capacitors. Each TMS4164FPL is described in the TMS4164data sheet and is fully electrically tested and processed according to TI's MIL-STD-883B (as ammended for commercialapplications) flows prior to assembly. After assembly onto the substrate, a further set of electrical tests is performed.The TM4164EC4 is rated for operation from OOC to 70 o C.upward compatibilityFuture 256K x 4 memory modules in single-in-line packages will have identical pin functions and spacing, but will be5,1 mm (0.2 inches) longer than the TM4164EC4; the length of the 256K x 4 (TM4256EE4) will be 61,0 ± 0,6 mmMAX (2.400±0.025 inches MAX). To ensure compatibility between the two devices, enough clearance should beallowed on the PC board design to accomodate the increased length of the TM4256EE4. Pin 1 of the TM4256EE4module will be memory address A8.34PRODUCT PREVIEWThis document contains information on a product underdevelopment. Texas Instruments reserves the right tochange or discontinue this product without notice. .TEXASINSTRUMENTSPOST OFFIC(SOX 225012 • DALLAS, TEXAS 75265Copyright © 1983 by Texas Instruments Incorporated5-1